X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from an-out-0708.google.com ([209.85.132.242] verified) by logan.com (CommuniGate Pro SMTP 5.1.10) with ESMTP id 2137858 for flyrotary@lancaironline.net; Sun, 24 Jun 2007 17:56:28 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.132.242; envelope-from=msteitle@gmail.com Received: by an-out-0708.google.com with SMTP id b2so257288ana for ; Sun, 24 Jun 2007 14:55:51 -0700 (PDT) DKIM-Signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references; b=SAJsaizErKWHKIGcfQkY4k21BL839fW0DmaZaDDVOypHfEIvhbQBw9PU0Z5ZG/jAwd+KVPM9XGvoPFYnfAoEJKB5dhSROpvEncnbAq91EWlD5dr0jVFp9EcXWoJyxPJ9ZfLPAHRqu0U5CYHeNgrGm75wUZr2zGZuXQRWyMBybAE= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references; b=RpAYiUeMnVVTEemCrrTTnifLMlGLXwcDfrEMyI4ECwgESGrvtrNS5b5DnbAV8088RRFnTtkL/arqTpTZ8hmFjFIzWmT8YuJNHfiSqzQ5ynDBYCBXGJoNFz/bBlQK+LCl7V/+vLrSSEF4x+37zlkriaGB3fpU3YdyZhwNqwDMO4w= Received: by 10.100.91.6 with SMTP id o6mr2818821anb.1182722151233; Sun, 24 Jun 2007 14:55:51 -0700 (PDT) Received: by 10.100.174.8 with HTTP; Sun, 24 Jun 2007 14:55:51 -0700 (PDT) Message-ID: <5cf132c0706241455q76fe73ceia533aa13cc382b2d@mail.gmail.com> Date: Sun, 24 Jun 2007 16:55:51 -0500 From: "Mark Steitle" To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: Method of killing power?? In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_53306_24191393.1182722151205" References: ------=_Part_53306_24191393.1182722151205 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline Ed, I am here to testify that turning off the fuel pumps, and/or the injectors first should be considered a safety factor rather than a personal preference. I'm not certain of the exact sequence, but on one run I waited until the engine totally stopped before shutting off the fuel pumps. I think I had shut off the two EC-2 switches first. This was after a good hard ground run and it resulted in a fire. Luckily, a fire extinguisher was close at hand or this story could have had a much different ending. Raw fuel in a hot exhaust manifold, plugs up or not, can result in a spontaneous combustion. I vote for shutting off the fuel pumps first. No fuel, no fire. For me there is no discussion, turn the fuel pumps off first... always! Mark S. On 6/24/07, Ed Anderson wrote: > > Thanks, Jim > > That's two for fuel pump shut off. > > Ed > > ----- Original Message ----- > *From:* James Maher > *To:* Rotary motors in aircraft > *Sent:* Sunday, June 24, 2007 10:35 AM > *Subject:* [FlyRotary] Re: Method of killing power?? > > > Ed, > I prefer the Fuel Pump shutoff method. > On my airplane the fuel system will remain pressurized for a long time > after shut down. > I don't like the idea of highly pressurized fuel inside a very hot engine > compartment. > So by turning off the fuel pumps with the engine still running it serves > to de-pressurize the fuel system. > This way if you do happen to get a stuck open injector it will not flood > the rotor housing with fuel. > It only takes a second or two for the engine to quit after fuel pump > shutoff. > Jim > > *Ed Anderson * wrote: > > *To everyone running a rotary engine and particularly flying with one - > what is your normal method of killing the engine.* > > 1. Turning off Main Power > 2. Turning off EC2 Power > 3. Turning off ignition > 4. Turning off Fuel Pumps > 5. Turning off injectors > 6. Other > Ed Anderson > Rv-6A N494BW Rotary Powered > Matthews, NC > eanderson@carolina.rr.com > http://members.cox.net/rogersda/rotary/configs.htm#N494BW > http://www.dmack.net/mazda/index.html > > > ------=_Part_53306_24191393.1182722151205 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline
Ed,
I am here to testify that turning off the fuel pumps, and/or the injectors first should be considered a safety factor rather than a personal preference.  I'm not certain of the exact sequence, but on one run I waited until the engine totally stopped before shutting off the fuel pumps.  I think I had shut off the two EC-2 switches first.  This was after a good hard ground run and it resulted in a fire.  Luckily, a fire extinguisher was close at hand or this story could have had a much different ending.   Raw fuel in a hot exhaust manifold, plugs up or not, can result in a spontaneous combustion.  I vote for shutting off the fuel pumps first.  No fuel, no fire.  For me there is no discussion, turn the fuel pumps off first... always!
 
Mark S.

 
On 6/24/07, Ed Anderson <eanderson@carolina.rr.com> wrote:
Thanks, Jim
 
That's two for fuel pump shut off.
 
Ed
----- Original Message -----
Sent: Sunday, June 24, 2007 10:35 AM
Subject: [FlyRotary] Re: Method of killing power??

 
Ed,
I prefer the Fuel Pump shutoff method.
On my airplane the fuel system will remain pressurized for a long time after shut down.
I don't like the idea of highly pressurized fuel inside a very hot engine compartment.
So by turning off the fuel pumps with the engine still running it serves to de-pressurize the fuel system.
This way if you do happen to get a stuck open injector it will not flood the rotor housing with fuel.
It only takes a second or two for the engine to quit after fuel pump shutoff.
Jim

Ed Anderson <eanderson@carolina.rr.com> wrote:
To everyone running a rotary engine and particularly flying with one - what is your normal method of killing the engine.
 
1.  Turning off Main Power
2.  Turning off EC2 Power
3.  Turning off ignition
4.  Turning off Fuel Pumps
5.  Turning off injectors
6.  Other


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